Kavremover Dropped Binary LOLBIN Usage — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2022-11-01 / not supplied.

{
  "product": "windows",
  "category": "process_creation"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 2f491759a2a3f5b1c02ecbece4a4f6cb04a091da42ee4e611cc8faecbc3942a1

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Kavremover Dropped Binary LOLBIN Usage
id: d047726b-c71c-4048-a99b-2e2f50dc107d
status: test
description: Detects the execution of a signed binary dropped by Kaspersky Lab Products Remover (kavremover) which can be abused as a LOLBIN to execute arbitrary commands and binaries.
references:
    - https://nasbench.medium.com/lolbined-using-kaspersky-endpoint-security-kes-installer-to-execute-arbitrary-commands-1c999f1b7fea
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-11-01
tags:
    - attack.execution
    - attack.stealth
    - attack.t1127
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        CommandLine|contains: ' run run-cmd '
    filter_main_legit_parents:
        ParentImage|endswith:
            - '\cleanapi.exe' # When launched from KES installer
            - '\kavremover.exe' # When launched from kavremover.exe
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://nasbench.medium.com/lolbined-using-kaspersky-endpoint-security-kes-installer-to-execute-arbitrary-commands-1c999f1b7fea